Oh, Karen, you had us at hello. The Yeah Yeah Yeahs played a mid-afternoon set on the Which Stage under a blazing sun, but that didn't stop anyone from dancing up even more of a sweat as Karen O. writhed seductively around the stage in her leopard print leotards and strategically place handprint bodysuit. The band played a perfectly balanced mix of older songs, along with the newer ones from It's Blitz!  Definite highlight of the festival.—Carrie Musgrave